Instability Reactions and Recycled Soybean-Derived Biodiesel Fuel Liquids

Mushrush, George W.; Wynne, James H.; Lloyd, Christopher T.; Willauer, Heather D.; Hughes, Janet

doi:10.1080/009083190966225

Cited by 17 publications

(9 citation statements)

References 2 publications

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“…Presence of trace fatty acids in the oil and seawater led to the formation of a soapy emulsion at the interphase. When using recycled oil, care should be taken to remove all acidic components or the biodiesel will not be stable [32].…”

Section: Edible Sources-virgin Oilmentioning

confidence: 99%

Biodiesel production—current state of the art and challenges

Vasudevan

Briggs

2008

J Ind Microbiol Biotechnol

605

286

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Biodiesel is a clean-burning fuel produced from grease, vegetable oils, or animal fats. Biodiesel is produced by transesterification of oils with short-chain alcohols or by the esterification of fatty acids. The transesterification reaction consists of transforming triglycerides into fatty acid alkyl esters, in the presence of an alcohol, such as methanol or ethanol, and a catalyst, such as an alkali or acid, with glycerol as a byproduct. Because of diminishing petroleum reserves and the deleterious environmental consequences of exhaust gases from petroleum diesel, biodiesel has attracted attention during the past few years as a renewable and environmentally friendly fuel. Since biodiesel is made entirely from vegetable oil or animal fats, it is renewable and biodegradable. The majority of biodiesel today is produced by alkali-catalyzed transesterification with methanol, which results in a relatively short reaction time. However, the vegetable oil and alcohol must be substantially anhydrous and have a low free fatty acid content, because the presence of water or free fatty acid or both promotes soap formation. In this article, we examine different biodiesel sources (edible and nonedible), virgin oil versus waste oil, algae-based biodiesel that is gaining increasing importance, role of different catalysts including enzyme catalysts, and the current state-of-the-art in biodiesel production.

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Section: Edible Sources-virgin Oilmentioning

confidence: 99%

Biodiesel production—current state of the art and challenges

Vasudevan

Briggs

2008

J Ind Microbiol Biotechnol

605

286

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show abstract

“…It has also been noted that FAME produced from old or recycled vegetable oils is less stable than FAME produced from fresh oils. (134,136) It generally appears that the most effective anti-oxidants for biodiesel include t-butyl hydroquinone (TBHQ) and pyrogallol (1,2,3 tri-hydroxy benzene). Butylated hydroxy toluene (BHT) is also somewhat effective, but may not be the preferred additive for biodiesel as it often is for petroleum diesel fuels.…”

Section: Anti-oxidantsmentioning

confidence: 99%

Biodistillate Transportation Fuels 1. Production and Properties

Hoekman

Gertler

Broch

et al. 2009

SAE Int. J. Fuels Lubr.

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“…Extensive data exists on the composition of a wide range of petroleum fuels, commercial FT derived fuels, and biofuels [3][4][5][6][7]. However, the blend data of FT with petroleum and biodiesel that does exist is intended to meet commercial requirements and not Navy marine specifications.…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…This layer would plug nozzles, filters, and damage engine parts with the ingestion of the seawater in the heavy emulsion layer. In addition recycled biodiesel blended with stable petroleum fuel can induce instability in the fuel [7]. These fuels were found to have acidic components remaining that were not methylated during the remanufacturing process.…”

Section: Introductionmentioning

confidence: 99%

“…For example studies have shown that biodiesel blends with petroleum cannot be used in marine environments where seawater compensating fuel tanks are involved, because at the oil water interface a heavy soapy emulsion forms [6,7]. This layer would plug nozzles, filters, and damage engine parts with the ingestion of the seawater in the heavy emulsion layer.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthetic Fuels and Biofuels: Questionable Replacements for Petroleum

Willauer¹,

Mushrush²,

Bauserman³

et al. 2008

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Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. Z39.18Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. The anticipation of synthetic fuel and biodiesel entering the fuel supply has led to concern regarding the relative stability of Fischer-Tropsch (FT) fuel, biofuel, and their blends with petroleum. This report summarizes the storage stability results found for a stable petroleum fuel and its blends with biodiesel and FT diesel. The findings show that at even low concentration, 5%, biodiesel appears insoluble in FT and FT petroleum middle distillate blends. The insolubility produced a large yield of sediments in the ASTM storage stability test. This insolubility means the fuel could not be stored or used as diesel fuel for combat operations. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S ACRONYM(S) 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S REPORT NUMBER(S)

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Instability Reactions and Recycled Soybean-Derived Biodiesel Fuel Liquids

Cited by 17 publications

References 2 publications

Biodiesel production—current state of the art and challenges

Biodiesel production—current state of the art and challenges

Biodistillate Transportation Fuels 1. Production and Properties

Synthetic Fuels and Biofuels: Questionable Replacements for Petroleum

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